Complex electronic states in double-layered ruthenates (Sr1-x Cax) 3 Ru2 O7

Zhe Qu, Jin Peng, Tijiang Liu, David Fobes, Leonard Spinu, Zhiqiang Mao

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The magnetic ground state of (Sr1-x Cax) 3 Ru2 O7 (0≤x≤1) is complex, ranging from an itinerant metamagnetic state (0≤x<0.08) to an unusual heavy-mass nearly ferromagnetic (FM) state (0.08<x<0.4), and finally to an antiferromagnetic (AFM) state (0.4≤x≤1). In this report we elucidate the electronic properties for these magnetic states, and show that the electronic and magnetic properties are strongly coupled in this system. The electronic ground state evolves from an AFM quasi-two-dimensional metal for x=1.0 to an Anderson localized state for 0.4≤x<1.0 (the AFM region). When the magnetic state undergoes a transition from the AFM to the nearly FM state, the electronic ground state switches to a weakly localized state induced by magnetic scattering for 0.25≤x<0.4, and then to a magnetic metallic state with the in-plane resistivity ρab Tα (α>2) for 0.08<x<0.25. The system eventually transforms into a Fermi-liquid ground state when the magnetic ground state enters the itinerant metamagnetic state for x<0.08. When x approaches the critical composition (x∼0.08), the Fermi-liquid temperature is suppressed to zero Kelvin, and non-Fermi-liquid behavior is observed. These results demonstrate the strong interplay between the charge and spin degrees of freedom in the double-layered ruthenates.

Original languageEnglish (US)
Article number115130
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number11
DOIs
StatePublished - Sep 30 2009

Fingerprint

Electronic states
Ground state
Fermi liquids
ground state
electronics
degrees of freedom
Liquids
liquids
Chemical analysis
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Qu, Zhe ; Peng, Jin ; Liu, Tijiang ; Fobes, David ; Spinu, Leonard ; Mao, Zhiqiang. / Complex electronic states in double-layered ruthenates (Sr1-x Cax) 3 Ru2 O7. In: Physical Review B - Condensed Matter and Materials Physics. 2009 ; Vol. 80, No. 11.
@article{9db3b6a93a6145fd9df9444f733d899c,
title = "Complex electronic states in double-layered ruthenates (Sr1-x Cax) 3 Ru2 O7",
abstract = "The magnetic ground state of (Sr1-x Cax) 3 Ru2 O7 (0≤x≤1) is complex, ranging from an itinerant metamagnetic state (0≤x<0.08) to an unusual heavy-mass nearly ferromagnetic (FM) state (0.082) for 0.08",
author = "Zhe Qu and Jin Peng and Tijiang Liu and David Fobes and Leonard Spinu and Zhiqiang Mao",
year = "2009",
month = "9",
day = "30",
doi = "10.1103/PhysRevB.80.115130",
language = "English (US)",
volume = "80",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "11",

}

Complex electronic states in double-layered ruthenates (Sr1-x Cax) 3 Ru2 O7. / Qu, Zhe; Peng, Jin; Liu, Tijiang; Fobes, David; Spinu, Leonard; Mao, Zhiqiang.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 11, 115130, 30.09.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Complex electronic states in double-layered ruthenates (Sr1-x Cax) 3 Ru2 O7

AU - Qu, Zhe

AU - Peng, Jin

AU - Liu, Tijiang

AU - Fobes, David

AU - Spinu, Leonard

AU - Mao, Zhiqiang

PY - 2009/9/30

Y1 - 2009/9/30

N2 - The magnetic ground state of (Sr1-x Cax) 3 Ru2 O7 (0≤x≤1) is complex, ranging from an itinerant metamagnetic state (0≤x<0.08) to an unusual heavy-mass nearly ferromagnetic (FM) state (0.082) for 0.08

AB - The magnetic ground state of (Sr1-x Cax) 3 Ru2 O7 (0≤x≤1) is complex, ranging from an itinerant metamagnetic state (0≤x<0.08) to an unusual heavy-mass nearly ferromagnetic (FM) state (0.082) for 0.08

UR - http://www.scopus.com/inward/record.url?scp=70350580370&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70350580370&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.80.115130

DO - 10.1103/PhysRevB.80.115130

M3 - Article

AN - SCOPUS:70350580370

VL - 80

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 11

M1 - 115130

ER -